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Old 14th June 2005, 10:48 PM   #1
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Default Help translating russian tube datasheet

Hello

I don't know if this topic belongs here, but, could someone help me decyphering this russian datasheet?
I would like to try ands build something simple with it (like the pre-amp i made with it's older brother)

Thank you very much

http://home.arcor.de/rhapidophyllum/1j24b.gif
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Old 14th June 2005, 11:43 PM   #2
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I can read and understand russian a bit.

1Zh24B; 1Z24B

High Frequency pentode with short characteristic

Directly heated cathode

Mounting position: any
Max frequency 60MHz
Miniature type
Guaranteed service life 5000h

Capacity, pF:
Input 3.6+-0.4
Output: 2.95+-0.45
Through? no more 0.008
Anode-cathode no more 0.025

Nominal characteristics:

Heater voltage 1.2V
Heater current 13+-2mA
Anode voltage 80V
Grid2 voltage 45V
Grid1 voltage 0V (I think this meand that grid cannot be positive)
Anode Current 0.95+-0.5mA
Grid2 current no more 0.1mA
??? 0.9+-0.3mA/V (what is measured in these units?)
The same with heater voltage of 0.95V: no less 0.48mA/V
Input resistance (could it be?) with operation frequency of 60MHz: no less 100Kom
Something about noise and resistance at 30MHz: no more 6Kom
Negative Grid1 current at voltage of -1V and 0.5Mom resistance: no more 0.1uA


Maximum values
Heater voltage max 1.4V min 0.95V
Anode voltage 120V
Grid2 voltage 90V
Anode power dissipation 0.12W
Cathode current max 1.6mA
Grid1 resistance max 2.2Mom (I think this is the resistor which is connected between Grid1 and GND)
Bulb Temperature 105C

Other values:

Enviroment temperature max +85C min -60C (+60C is a bit too high, so I think that minus sign dissapeared)
Pressure 5 athmospheres

What is written below I can not understand.

Did I help?
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Old 14th June 2005, 11:46 PM   #3
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Using Google with tube name 1Zh24B I came with this info

Name 1Zh24B
Type penthode
Application HF voltage amplification
Cathode type oxide,direct heating
Envelope glass,miniature
Mass,g 4
Filament voltage,V 1,2
Filament current,A 0,011-0,015
Anode voltage,V 60
Grid1 voltage,V 0
Grid2 voltage,V 45
Steepness,mA/V 0,48
Reverse grid current,uA 0,1
Microphnic noise,mV 50
Socket type flexible
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Old 15th June 2005, 01:17 AM   #4
SY is offline SY  United States
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Quote:
Filament voltage,V 1,2
Filament current,A 0,011-0,015
That is one amazing tube. Or someone slipped in translation.
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Old 15th June 2005, 03:01 AM   #5
jlsem is offline jlsem  United States
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Quote:
??? 0.9+-0.3mA/V (what is measured in these units?)
Transconductance. This is a very low figure.

John
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Old 15th June 2005, 07:25 AM   #6
Colt45 is offline Colt45  Serbia
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Quote:
Originally posted by SY


That is one amazing tube. Or someone slipped in translation.

That's what it says. heater is 1,2v @ 132mA
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Old 15th June 2005, 08:40 AM   #7
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Its a battery tube, possibly from a battery radio.
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Old 15th June 2005, 02:02 PM   #8
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Thank you!

It's older brother, the 1ZH29B is 64mA at 1.2V or 32mA at 2.4V
Once more i appreciate yor help, now to see if i can figure out (a.ka. learn)how to make a small preamp from it
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